The Blue 500 Plush model is designed to deliver ultra-plush comfort with the benefits of our latest breakthroughs in memory foam technology. It combines our TempActiv Gel Memory Foam with an extra-thick layer of EverCool Fuze Memory Foam for enhanced cooling comfort that also supports every curve of your body. It also features a layer of our EverCool Supreme Memory Foam for cradling comfort that helps relieve pressure points with a softer, yet supportive feel.